9 1/2 Triangle Square Up PLUS by Quilt in a Day This New and improved Triangle Square Up Ruler makes perfect half triangle squares or quarter triangle squares in half the time. Features tip grooves to trim tips at 1" & 1/2" increments. Squares patches up to 9 1/2 inches. The ruler is marked in two colors for easy reading and coordinates with the most popular ruler brand. Convenient 1/8-inch, 1/4-inch, 1/2-inch, and 1-inch lines for precise measuring. Laser cut and printed on Polycarbonate Clear Plastic. Fully illustrated and detailed instructions are included. Made in the USA.